Meghan Markle, 35, has been dating Harry since the summer and the pair are believed to have partied at Toronto's Soho House over Halloween with Princess Eugenie . PRINCESS Eugenie will attend Meghan Markle and Prince Harry's wedding with Jack Brooksbank, and her sister Beatrice is also set to attend. Meghan Markle and Prince Harry aren’t the only royal duo to walk down the aisle this year. Queen Elizabeth II’s granddaughter, Princess Eugenie, announced her engagement to her longtime beau, Jack Brooksbank. The couple plans to tie the knot in the fall. Since Princess Eugenie will use the.